This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 18 |
| 3 | 20 |
| 4 | 30 |
| 5 | 130 |
| 6 | 256 |
| 7 | 1042 |
| 8 | 4710 |
| 9 | 7202 |
| 10 | 10082 |
| 11 | 47274 |
| 12 | 65536 |
| 13 | 65600 |
| 14 | 351634 |
| 15 | 426530 |
| 16 | 431730 |
| 17 | 764930 |
| 18 | 5921514 |
| 19 | 26639560 |
| 20 | 32435910 |
| 21 | 88605010 |
| 22 | 97025190 |
| 23 | 99562110 |